opcodes/ip2k-ibld.c

   1 /* Instruction building/extraction support for ip2k. -*- C -*-
   2
   3    THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
   4    - the resultant file is machine generated, cgen-ibld.in isn't
   5
   6    Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2006, 2007
   7    Free Software Foundation, Inc.
   8
   9    This file is part of libopcodes.
  10
  11    This library is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3, or (at your option)
  14    any later version.
  15
  16    It is distributed in the hope that it will be useful, but WITHOUT
  17    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  18    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  19    License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software Foundation, Inc.,
  23    51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  24
  25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
  26    Keep that in mind.  */
  27
  28 #include "sysdep.h"
  29 #include <stdio.h>
  30 #include "ansidecl.h"
  31 #include "dis-asm.h"
  32 #include "bfd.h"
  33 #include "symcat.h"
  34 #include "ip2k-desc.h"
  35 #include "ip2k-opc.h"
  36 #include "opintl.h"
  37 #include "safe-ctype.h"
  38
  39 #undef  min
  40 #define min(a,b) ((a) < (b) ? (a) : (b))
  41 #undef  max
  42 #define max(a,b) ((a) > (b) ? (a) : (b))
  43
  44 /* Used by the ifield rtx function.  */
  45 #define FLD(f) (fields->f)
  46
  47 static const char * insert_normal
  48   (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
  49    unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
  50 static const char * insert_insn_normal
  51   (CGEN_CPU_DESC, const CGEN_INSN *,
  52    CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
  53 static int extract_normal
  54   (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
  55    unsigned int, unsigned int, unsigned int, unsigned int,
  56    unsigned int, unsigned int, bfd_vma, long *);
  57 static int extract_insn_normal
  58   (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
  59    CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
  60 #if CGEN_INT_INSN_P
  61 static void put_insn_int_value
  62   (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
  63 #endif
  64 #if ! CGEN_INT_INSN_P
  65 static CGEN_INLINE void insert_1
  66   (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
  67 static CGEN_INLINE int fill_cache
  68   (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *,  int, int, bfd_vma);
  69 static CGEN_INLINE long extract_1
  70   (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
  71 #endif
  72 \f
  73 /* Operand insertion.  */
  74
  75 #if ! CGEN_INT_INSN_P
  76
  77 /* Subroutine of insert_normal.  */
  78
  79 static CGEN_INLINE void
  80 insert_1 (CGEN_CPU_DESC cd,
  81           unsigned long value,
  82           int start,
  83           int length,
  84           int word_length,
  85           unsigned char *bufp)
  86 {
  87   unsigned long x,mask;
  88   int shift;
  89
  90   x = cgen_get_insn_value (cd, bufp, word_length);
  91
  92   /* Written this way to avoid undefined behaviour.  */
  93   mask = (((1L << (length - 1)) - 1) << 1) | 1;
  94   if (CGEN_INSN_LSB0_P)
  95     shift = (start + 1) - length;
  96   else
  97     shift = (word_length - (start + length));
  98   x = (x & ~(mask << shift)) | ((value & mask) << shift);
  99
 100   cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
 101 }
 102
 103 #endif /* ! CGEN_INT_INSN_P */
 104
 105 /* Default insertion routine.
 106
 107    ATTRS is a mask of the boolean attributes.
 108    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 109    WORD_LENGTH is the length of the word in bits in which the value resides.
 110    START is the starting bit number in the word, architecture origin.
 111    LENGTH is the length of VALUE in bits.
 112    TOTAL_LENGTH is the total length of the insn in bits.
 113
 114    The result is an error message or NULL if success.  */
 115
 116 /* ??? This duplicates functionality with bfd's howto table and
 117    bfd_install_relocation.  */
 118 /* ??? This doesn't handle bfd_vma's.  Create another function when
 119    necessary.  */
 120
 121 static const char *
 122 insert_normal (CGEN_CPU_DESC cd,
 123                long value,
 124                unsigned int attrs,
 125                unsigned int word_offset,
 126                unsigned int start,
 127                unsigned int length,
 128                unsigned int word_length,
 129                unsigned int total_length,
 130                CGEN_INSN_BYTES_PTR buffer)
 131 {
 132   static char errbuf[100];
 133   /* Written this way to avoid undefined behaviour.  */
 134   unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
 135
 136   /* If LENGTH is zero, this operand doesn't contribute to the value.  */
 137   if (length == 0)
 138     return NULL;
 139
 140   if (word_length > 32)
 141     abort ();
 142
 143   /* For architectures with insns smaller than the base-insn-bitsize,
 144      word_length may be too big.  */
 145   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 146     {
 147       if (word_offset == 0
 148           && word_length > total_length)
 149         word_length = total_length;
 150     }
 151
 152   /* Ensure VALUE will fit.  */
 153   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
 154     {
 155       long minval = - (1L << (length - 1));
 156       unsigned long maxval = mask;
 157
 158       if ((value > 0 && (unsigned long) value > maxval)
 159           || value < minval)
 160         {
 161           /* xgettext:c-format */
 162           sprintf (errbuf,
 163                    _("operand out of range (%ld not between %ld and %lu)"),
 164                    value, minval, maxval);
 165           return errbuf;
 166         }
 167     }
 168   else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
 169     {
 170       unsigned long maxval = mask;
 171       unsigned long val = (unsigned long) value;
 172
 173       /* For hosts with a word size > 32 check to see if value has been sign
 174          extended beyond 32 bits.  If so then ignore these higher sign bits
 175          as the user is attempting to store a 32-bit signed value into an
 176          unsigned 32-bit field which is allowed.  */
 177       if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
 178         val &= 0xFFFFFFFF;
 179
 180       if (val > maxval)
 181         {
 182           /* xgettext:c-format */
 183           sprintf (errbuf,
 184                    _("operand out of range (0x%lx not between 0 and 0x%lx)"),
 185                    val, maxval);
 186           return errbuf;
 187         }
 188     }
 189   else
 190     {
 191       if (! cgen_signed_overflow_ok_p (cd))
 192         {
 193           long minval = - (1L << (length - 1));
 194           long maxval =   (1L << (length - 1)) - 1;
 195
 196           if (value < minval || value > maxval)
 197             {
 198               sprintf
 199                 /* xgettext:c-format */
 200                 (errbuf, _("operand out of range (%ld not between %ld and %ld)"),
 201                  value, minval, maxval);
 202               return errbuf;
 203             }
 204         }
 205     }
 206
 207 #if CGEN_INT_INSN_P
 208
 209   {
 210     int shift;
 211
 212     if (CGEN_INSN_LSB0_P)
 213       shift = (word_offset + start + 1) - length;
 214     else
 215       shift = total_length - (word_offset + start + length);
 216     *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
 217   }
 218
 219 #else /* ! CGEN_INT_INSN_P */
 220
 221   {
 222     unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
 223
 224     insert_1 (cd, value, start, length, word_length, bufp);
 225   }
 226
 227 #endif /* ! CGEN_INT_INSN_P */
 228
 229   return NULL;
 230 }
 231
 232 /* Default insn builder (insert handler).
 233    The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
 234    that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
 235    recorded in host byte order, otherwise BUFFER is an array of bytes
 236    and the value is recorded in target byte order).
 237    The result is an error message or NULL if success.  */
 238
 239 static const char *
 240 insert_insn_normal (CGEN_CPU_DESC cd,
 241                     const CGEN_INSN * insn,
 242                     CGEN_FIELDS * fields,
 243                     CGEN_INSN_BYTES_PTR buffer,
 244                     bfd_vma pc)
 245 {
 246   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 247   unsigned long value;
 248   const CGEN_SYNTAX_CHAR_TYPE * syn;
 249
 250   CGEN_INIT_INSERT (cd);
 251   value = CGEN_INSN_BASE_VALUE (insn);
 252
 253   /* If we're recording insns as numbers (rather than a string of bytes),
 254      target byte order handling is deferred until later.  */
 255
 256 #if CGEN_INT_INSN_P
 257
 258   put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
 259                       CGEN_FIELDS_BITSIZE (fields), value);
 260
 261 #else
 262
 263   cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
 264                                         (unsigned) CGEN_FIELDS_BITSIZE (fields)),
 265                        value);
 266
 267 #endif /* ! CGEN_INT_INSN_P */
 268
 269   /* ??? It would be better to scan the format's fields.
 270      Still need to be able to insert a value based on the operand though;
 271      e.g. storing a branch displacement that got resolved later.
 272      Needs more thought first.  */
 273
 274   for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
 275     {
 276       const char *errmsg;
 277
 278       if (CGEN_SYNTAX_CHAR_P (* syn))
 279         continue;
 280
 281       errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 282                                        fields, buffer, pc);
 283       if (errmsg)
 284         return errmsg;
 285     }
 286
 287   return NULL;
 288 }
 289
 290 #if CGEN_INT_INSN_P
 291 /* Cover function to store an insn value into an integral insn.  Must go here
 292    because it needs <prefix>-desc.h for CGEN_INT_INSN_P.  */
 293
 294 static void
 295 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 296                     CGEN_INSN_BYTES_PTR buf,
 297                     int length,
 298                     int insn_length,
 299                     CGEN_INSN_INT value)
 300 {
 301   /* For architectures with insns smaller than the base-insn-bitsize,
 302      length may be too big.  */
 303   if (length > insn_length)
 304     *buf = value;
 305   else
 306     {
 307       int shift = insn_length - length;
 308       /* Written this way to avoid undefined behaviour.  */
 309       CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
 310
 311       *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
 312     }
 313 }
 314 #endif
 315 \f
 316 /* Operand extraction.  */
 317
 318 #if ! CGEN_INT_INSN_P
 319
 320 /* Subroutine of extract_normal.
 321    Ensure sufficient bytes are cached in EX_INFO.
 322    OFFSET is the offset in bytes from the start of the insn of the value.
 323    BYTES is the length of the needed value.
 324    Returns 1 for success, 0 for failure.  */
 325
 326 static CGEN_INLINE int
 327 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 328             CGEN_EXTRACT_INFO *ex_info,
 329             int offset,
 330             int bytes,
 331             bfd_vma pc)
 332 {
 333   /* It's doubtful that the middle part has already been fetched so
 334      we don't optimize that case.  kiss.  */
 335   unsigned int mask;
 336   disassemble_info *info = (disassemble_info *) ex_info->dis_info;
 337
 338   /* First do a quick check.  */
 339   mask = (1 << bytes) - 1;
 340   if (((ex_info->valid >> offset) & mask) == mask)
 341     return 1;
 342
 343   /* Search for the first byte we need to read.  */
 344   for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
 345     if (! (mask & ex_info->valid))
 346       break;
 347
 348   if (bytes)
 349     {
 350       int status;
 351
 352       pc += offset;
 353       status = (*info->read_memory_func)
 354         (pc, ex_info->insn_bytes + offset, bytes, info);
 355
 356       if (status != 0)
 357         {
 358           (*info->memory_error_func) (status, pc, info);
 359           return 0;
 360         }
 361
 362       ex_info->valid |= ((1 << bytes) - 1) << offset;
 363     }
 364
 365   return 1;
 366 }
 367
 368 /* Subroutine of extract_normal.  */
 369
 370 static CGEN_INLINE long
 371 extract_1 (CGEN_CPU_DESC cd,
 372            CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 373            int start,
 374            int length,
 375            int word_length,
 376            unsigned char *bufp,
 377            bfd_vma pc ATTRIBUTE_UNUSED)
 378 {
 379   unsigned long x;
 380   int shift;
 381
 382   x = cgen_get_insn_value (cd, bufp, word_length);
 383
 384   if (CGEN_INSN_LSB0_P)
 385     shift = (start + 1) - length;
 386   else
 387     shift = (word_length - (start + length));
 388   return x >> shift;
 389 }
 390
 391 #endif /* ! CGEN_INT_INSN_P */
 392
 393 /* Default extraction routine.
 394
 395    INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
 396    or sometimes less for cases like the m32r where the base insn size is 32
 397    but some insns are 16 bits.
 398    ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
 399    but for generality we take a bitmask of all of them.
 400    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 401    WORD_LENGTH is the length of the word in bits in which the value resides.
 402    START is the starting bit number in the word, architecture origin.
 403    LENGTH is the length of VALUE in bits.
 404    TOTAL_LENGTH is the total length of the insn in bits.
 405
 406    Returns 1 for success, 0 for failure.  */
 407
 408 /* ??? The return code isn't properly used.  wip.  */
 409
 410 /* ??? This doesn't handle bfd_vma's.  Create another function when
 411    necessary.  */
 412
 413 static int
 414 extract_normal (CGEN_CPU_DESC cd,
 415 #if ! CGEN_INT_INSN_P
 416                 CGEN_EXTRACT_INFO *ex_info,
 417 #else
 418                 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 419 #endif
 420                 CGEN_INSN_INT insn_value,
 421                 unsigned int attrs,
 422                 unsigned int word_offset,
 423                 unsigned int start,
 424                 unsigned int length,
 425                 unsigned int word_length,
 426                 unsigned int total_length,
 427 #if ! CGEN_INT_INSN_P
 428                 bfd_vma pc,
 429 #else
 430                 bfd_vma pc ATTRIBUTE_UNUSED,
 431 #endif
 432                 long *valuep)
 433 {
 434   long value, mask;
 435
 436   /* If LENGTH is zero, this operand doesn't contribute to the value
 437      so give it a standard value of zero.  */
 438   if (length == 0)
 439     {
 440       *valuep = 0;
 441       return 1;
 442     }
 443
 444   if (word_length > 32)
 445     abort ();
 446
 447   /* For architectures with insns smaller than the insn-base-bitsize,
 448      word_length may be too big.  */
 449   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 450     {
 451       if (word_offset + word_length > total_length)
 452         word_length = total_length - word_offset;
 453     }
 454
 455   /* Does the value reside in INSN_VALUE, and at the right alignment?  */
 456
 457   if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
 458     {
 459       if (CGEN_INSN_LSB0_P)
 460         value = insn_value >> ((word_offset + start + 1) - length);
 461       else
 462         value = insn_value >> (total_length - ( word_offset + start + length));
 463     }
 464
 465 #if ! CGEN_INT_INSN_P
 466
 467   else
 468     {
 469       unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
 470
 471       if (word_length > 32)
 472         abort ();
 473
 474       if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
 475         return 0;
 476
 477       value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
 478     }
 479
 480 #endif /* ! CGEN_INT_INSN_P */
 481
 482   /* Written this way to avoid undefined behaviour.  */
 483   mask = (((1L << (length - 1)) - 1) << 1) | 1;
 484
 485   value &= mask;
 486   /* sign extend? */
 487   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
 488       && (value & (1L << (length - 1))))
 489     value |= ~mask;
 490
 491   *valuep = value;
 492
 493   return 1;
 494 }
 495
 496 /* Default insn extractor.
 497
 498    INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
 499    The extracted fields are stored in FIELDS.
 500    EX_INFO is used to handle reading variable length insns.
 501    Return the length of the insn in bits, or 0 if no match,
 502    or -1 if an error occurs fetching data (memory_error_func will have
 503    been called).  */
 504
 505 static int
 506 extract_insn_normal (CGEN_CPU_DESC cd,
 507                      const CGEN_INSN *insn,
 508                      CGEN_EXTRACT_INFO *ex_info,
 509                      CGEN_INSN_INT insn_value,
 510                      CGEN_FIELDS *fields,
 511                      bfd_vma pc)
 512 {
 513   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 514   const CGEN_SYNTAX_CHAR_TYPE *syn;
 515
 516   CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
 517
 518   CGEN_INIT_EXTRACT (cd);
 519
 520   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 521     {
 522       int length;
 523
 524       if (CGEN_SYNTAX_CHAR_P (*syn))
 525         continue;
 526
 527       length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 528                                         ex_info, insn_value, fields, pc);
 529       if (length <= 0)
 530         return length;
 531     }
 532
 533   /* We recognized and successfully extracted this insn.  */
 534   return CGEN_INSN_BITSIZE (insn);
 535 }
 536 \f
 537 /* Machine generated code added here.  */
 538
 539 const char * ip2k_cgen_insert_operand
 540   (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
 541
 542 /* Main entry point for operand insertion.
 543
 544    This function is basically just a big switch statement.  Earlier versions
 545    used tables to look up the function to use, but
 546    - if the table contains both assembler and disassembler functions then
 547      the disassembler contains much of the assembler and vice-versa,
 548    - there's a lot of inlining possibilities as things grow,
 549    - using a switch statement avoids the function call overhead.
 550
 551    This function could be moved into `parse_insn_normal', but keeping it
 552    separate makes clear the interface between `parse_insn_normal' and each of
 553    the handlers.  It's also needed by GAS to insert operands that couldn't be
 554    resolved during parsing.  */
 555
 556 const char *
 557 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd,
 558                              int opindex,
 559                              CGEN_FIELDS * fields,
 560                              CGEN_INSN_BYTES_PTR buffer,
 561                              bfd_vma pc ATTRIBUTE_UNUSED)
 562 {
 563   const char * errmsg = NULL;
 564   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 565
 566   switch (opindex)
 567     {
 568     case IP2K_OPERAND_ADDR16CJP :
 569       errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer);
 570       break;
 571     case IP2K_OPERAND_ADDR16H :
 572       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 573       break;
 574     case IP2K_OPERAND_ADDR16L :
 575       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 576       break;
 577     case IP2K_OPERAND_ADDR16P :
 578       errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer);
 579       break;
 580     case IP2K_OPERAND_BITNO :
 581       errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer);
 582       break;
 583     case IP2K_OPERAND_CBIT :
 584       break;
 585     case IP2K_OPERAND_DCBIT :
 586       break;
 587     case IP2K_OPERAND_FR :
 588       errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer);
 589       break;
 590     case IP2K_OPERAND_LIT8 :
 591       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 592       break;
 593     case IP2K_OPERAND_PABITS :
 594       break;
 595     case IP2K_OPERAND_RETI3 :
 596       errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer);
 597       break;
 598     case IP2K_OPERAND_ZBIT :
 599       break;
 600
 601     default :
 602       /* xgettext:c-format */
 603       fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
 604                opindex);
 605       abort ();
 606   }
 607
 608   return errmsg;
 609 }
 610
 611 int ip2k_cgen_extract_operand
 612   (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
 613
 614 /* Main entry point for operand extraction.
 615    The result is <= 0 for error, >0 for success.
 616    ??? Actual values aren't well defined right now.
 617
 618    This function is basically just a big switch statement.  Earlier versions
 619    used tables to look up the function to use, but
 620    - if the table contains both assembler and disassembler functions then
 621      the disassembler contains much of the assembler and vice-versa,
 622    - there's a lot of inlining possibilities as things grow,
 623    - using a switch statement avoids the function call overhead.
 624
 625    This function could be moved into `print_insn_normal', but keeping it
 626    separate makes clear the interface between `print_insn_normal' and each of
 627    the handlers.  */
 628
 629 int
 630 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd,
 631                              int opindex,
 632                              CGEN_EXTRACT_INFO *ex_info,
 633                              CGEN_INSN_INT insn_value,
 634                              CGEN_FIELDS * fields,
 635                              bfd_vma pc)
 636 {
 637   /* Assume success (for those operands that are nops).  */
 638   int length = 1;
 639   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 640
 641   switch (opindex)
 642     {
 643     case IP2K_OPERAND_ADDR16CJP :
 644       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp);
 645       break;
 646     case IP2K_OPERAND_ADDR16H :
 647       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 648       break;
 649     case IP2K_OPERAND_ADDR16L :
 650       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 651       break;
 652     case IP2K_OPERAND_ADDR16P :
 653       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3);
 654       break;
 655     case IP2K_OPERAND_BITNO :
 656       length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno);
 657       break;
 658     case IP2K_OPERAND_CBIT :
 659       break;
 660     case IP2K_OPERAND_DCBIT :
 661       break;
 662     case IP2K_OPERAND_FR :
 663       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg);
 664       break;
 665     case IP2K_OPERAND_LIT8 :
 666       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 667       break;
 668     case IP2K_OPERAND_PABITS :
 669       break;
 670     case IP2K_OPERAND_RETI3 :
 671       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3);
 672       break;
 673     case IP2K_OPERAND_ZBIT :
 674       break;
 675
 676     default :
 677       /* xgettext:c-format */
 678       fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
 679                opindex);
 680       abort ();
 681     }
 682
 683   return length;
 684 }
 685
 686 cgen_insert_fn * const ip2k_cgen_insert_handlers[] =
 687 {
 688   insert_insn_normal,
 689 };
 690
 691 cgen_extract_fn * const ip2k_cgen_extract_handlers[] =
 692 {
 693   extract_insn_normal,
 694 };
 695
 696 int ip2k_cgen_get_int_operand     (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 697 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 698
 699 /* Getting values from cgen_fields is handled by a collection of functions.
 700    They are distinguished by the type of the VALUE argument they return.
 701    TODO: floating point, inlining support, remove cases where result type
 702    not appropriate.  */
 703
 704 int
 705 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 706                              int opindex,
 707                              const CGEN_FIELDS * fields)
 708 {
 709   int value;
 710
 711   switch (opindex)
 712     {
 713     case IP2K_OPERAND_ADDR16CJP :
 714       value = fields->f_addr16cjp;
 715       break;
 716     case IP2K_OPERAND_ADDR16H :
 717       value = fields->f_imm8;
 718       break;
 719     case IP2K_OPERAND_ADDR16L :
 720       value = fields->f_imm8;
 721       break;
 722     case IP2K_OPERAND_ADDR16P :
 723       value = fields->f_page3;
 724       break;
 725     case IP2K_OPERAND_BITNO :
 726       value = fields->f_bitno;
 727       break;
 728     case IP2K_OPERAND_CBIT :
 729       value = 0;
 730       break;
 731     case IP2K_OPERAND_DCBIT :
 732       value = 0;
 733       break;
 734     case IP2K_OPERAND_FR :
 735       value = fields->f_reg;
 736       break;
 737     case IP2K_OPERAND_LIT8 :
 738       value = fields->f_imm8;
 739       break;
 740     case IP2K_OPERAND_PABITS :
 741       value = 0;
 742       break;
 743     case IP2K_OPERAND_RETI3 :
 744       value = fields->f_reti3;
 745       break;
 746     case IP2K_OPERAND_ZBIT :
 747       value = 0;
 748       break;
 749
 750     default :
 751       /* xgettext:c-format */
 752       fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
 753                        opindex);
 754       abort ();
 755   }
 756
 757   return value;
 758 }
 759
 760 bfd_vma
 761 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 762                              int opindex,
 763                              const CGEN_FIELDS * fields)
 764 {
 765   bfd_vma value;
 766
 767   switch (opindex)
 768     {
 769     case IP2K_OPERAND_ADDR16CJP :
 770       value = fields->f_addr16cjp;
 771       break;
 772     case IP2K_OPERAND_ADDR16H :
 773       value = fields->f_imm8;
 774       break;
 775     case IP2K_OPERAND_ADDR16L :
 776       value = fields->f_imm8;
 777       break;
 778     case IP2K_OPERAND_ADDR16P :
 779       value = fields->f_page3;
 780       break;
 781     case IP2K_OPERAND_BITNO :
 782       value = fields->f_bitno;
 783       break;
 784     case IP2K_OPERAND_CBIT :
 785       value = 0;
 786       break;
 787     case IP2K_OPERAND_DCBIT :
 788       value = 0;
 789       break;
 790     case IP2K_OPERAND_FR :
 791       value = fields->f_reg;
 792       break;
 793     case IP2K_OPERAND_LIT8 :
 794       value = fields->f_imm8;
 795       break;
 796     case IP2K_OPERAND_PABITS :
 797       value = 0;
 798       break;
 799     case IP2K_OPERAND_RETI3 :
 800       value = fields->f_reti3;
 801       break;
 802     case IP2K_OPERAND_ZBIT :
 803       value = 0;
 804       break;
 805
 806     default :
 807       /* xgettext:c-format */
 808       fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
 809                        opindex);
 810       abort ();
 811   }
 812
 813   return value;
 814 }
 815
 816 void ip2k_cgen_set_int_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
 817 void ip2k_cgen_set_vma_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
 818
 819 /* Stuffing values in cgen_fields is handled by a collection of functions.
 820    They are distinguished by the type of the VALUE argument they accept.
 821    TODO: floating point, inlining support, remove cases where argument type
 822    not appropriate.  */
 823
 824 void
 825 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 826                              int opindex,
 827                              CGEN_FIELDS * fields,
 828                              int value)
 829 {
 830   switch (opindex)
 831     {
 832     case IP2K_OPERAND_ADDR16CJP :
 833       fields->f_addr16cjp = value;
 834       break;
 835     case IP2K_OPERAND_ADDR16H :
 836       fields->f_imm8 = value;
 837       break;
 838     case IP2K_OPERAND_ADDR16L :
 839       fields->f_imm8 = value;
 840       break;
 841     case IP2K_OPERAND_ADDR16P :
 842       fields->f_page3 = value;
 843       break;
 844     case IP2K_OPERAND_BITNO :
 845       fields->f_bitno = value;
 846       break;
 847     case IP2K_OPERAND_CBIT :
 848       break;
 849     case IP2K_OPERAND_DCBIT :
 850       break;
 851     case IP2K_OPERAND_FR :
 852       fields->f_reg = value;
 853       break;
 854     case IP2K_OPERAND_LIT8 :
 855       fields->f_imm8 = value;
 856       break;
 857     case IP2K_OPERAND_PABITS :
 858       break;
 859     case IP2K_OPERAND_RETI3 :
 860       fields->f_reti3 = value;
 861       break;
 862     case IP2K_OPERAND_ZBIT :
 863       break;
 864
 865     default :
 866       /* xgettext:c-format */
 867       fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
 868                        opindex);
 869       abort ();
 870   }
 871 }
 872
 873 void
 874 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 875                              int opindex,
 876                              CGEN_FIELDS * fields,
 877                              bfd_vma value)
 878 {
 879   switch (opindex)
 880     {
 881     case IP2K_OPERAND_ADDR16CJP :
 882       fields->f_addr16cjp = value;
 883       break;
 884     case IP2K_OPERAND_ADDR16H :
 885       fields->f_imm8 = value;
 886       break;
 887     case IP2K_OPERAND_ADDR16L :
 888       fields->f_imm8 = value;
 889       break;
 890     case IP2K_OPERAND_ADDR16P :
 891       fields->f_page3 = value;
 892       break;
 893     case IP2K_OPERAND_BITNO :
 894       fields->f_bitno = value;
 895       break;
 896     case IP2K_OPERAND_CBIT :
 897       break;
 898     case IP2K_OPERAND_DCBIT :
 899       break;
 900     case IP2K_OPERAND_FR :
 901       fields->f_reg = value;
 902       break;
 903     case IP2K_OPERAND_LIT8 :
 904       fields->f_imm8 = value;
 905       break;
 906     case IP2K_OPERAND_PABITS :
 907       break;
 908     case IP2K_OPERAND_RETI3 :
 909       fields->f_reti3 = value;
 910       break;
 911     case IP2K_OPERAND_ZBIT :
 912       break;
 913
 914     default :
 915       /* xgettext:c-format */
 916       fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
 917                        opindex);
 918       abort ();
 919   }
 920 }
 921
 922 /* Function to call before using the instruction builder tables.  */
 923
 924 void
 925 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
 926 {
 927   cd->insert_handlers = & ip2k_cgen_insert_handlers[0];
 928   cd->extract_handlers = & ip2k_cgen_extract_handlers[0];
 929
 930   cd->insert_operand = ip2k_cgen_insert_operand;
 931   cd->extract_operand = ip2k_cgen_extract_operand;
 932
 933   cd->get_int_operand = ip2k_cgen_get_int_operand;
 934   cd->set_int_operand = ip2k_cgen_set_int_operand;
 935   cd->get_vma_operand = ip2k_cgen_get_vma_operand;
 936   cd->set_vma_operand = ip2k_cgen_set_vma_operand;
 937 }